Bridge bearing capacity testing device

Abstract

The utility model discloses a bridge bearing capacity testing device which comprises a supporting column A and a pressure-bearing base arranged at the right end of the bottom of the supporting column A. A supporting column B is arranged at the right end of the pressure-bearing base, and the supporting column A and the supporting column B are parallel to each other. A novel testing protection device is additionally arranged on the two stand columns of the bridge bearing capacity testing device, the testing protection device can be adjusted in a lifting mode through transmission of lifting stepping motors on the two stand columns, and when the bearing capacity is tested, a bridge part is prone to being locally cracked under the action of strong pressure; when the bearing capacity is tested, spatters generated by cracking can be sputtered outwards, and the test protection device can block the spatters generated during the bearing capacity test only by descending the test protection device to the outside of the test area before the test, so that the spatters generated during the test can be prevented from impacting the body of a tester, and the test efficiency is improved. Therefore, the personal safety of testers is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field related to bridge bearing capacity testing, and specifically relates to a bridge bearing capacity testing device. Background Art

[0002] When the bridge bearing capacity testing device conducts a bearing capacity test on a bridge, a bridge component or a bridge replica model, it is necessary to place the bridge, the bridge component or the bridge replica model on the bridge placement seat at the top of the two jacking hydraulics, and then start the downward pressure hydraulic and the two jacking hydraulics. The downward pressure hydraulic applies downward pressure at the center of the top of the bridge, the bridge component or the bridge replica model, while the two jacking hydraulics apply upward pressure at the bottom of the left and right ends of the bridge, the bridge component or the bridge replica model, thereby simulating the state of the bridge when bearing load, and testing the bridge bearing capacity by observing the deformation of the bridge, the bridge component or the bridge replica model when pressure is applied.

[0003] However, when a bridge, bridge component or bridge replica model is under pressure, it is easy to partially crack. The cracking caused by the strong pressure will produce splashes, which can easily injure the testers and is not conducive to the safe operation of the bridge bearing capacity testing device. Utility Model Content

[0004] The purpose of the utility model is to provide a bridge bearing capacity testing device to solve the problem proposed in the above-mentioned background technology that bridges, bridge components or bridge replica models are prone to local cracking when under pressure, and the cracking caused by strong pressure will produce splashes, which will easily injure testers when splashing outward.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bridge bearing capacity testing device, comprising a pillar A and a pressure-bearing base arranged at the right end of the bottom of the pillar A, a pillar B is arranged at the right end of the pressure-bearing base, the pillars A and B are parallel to each other, a pressure-bearing top seat is connected between the tops of the pillars A and B, a downward pressure hydraulic pressure is arranged at the center of the bottom end of the pressure-bearing top seat, a downward pressure seat is arranged at the bottom end of the hydraulic shaft of the downward pressure hydraulic pressure, and a test protection device is connected to the left end of the pillar A and the right end of the pillar B;

[0006] The test protection device includes a lifting screw A, a lifting integrated frame, an internal thread lifting sleeve A, a lifting stepper motor, an internal thread lifting sleeve B and a lifting screw B. Two lifting stepper motors are provided, and the two lifting stepper motors are respectively fixed on the outer wall of the left end of the top of the pillar A and the outer wall of the right end of the top of the pillar B. The bottom ends of the output shafts of the two lifting stepper motors are respectively connected with the lifting screw A and the lifting screw B. The lifting screw A and the lifting screw B are respectively located on the outside of the left end of the pillar A and the outside of the right end of the pillar B. The external thread of the lifting screw A is connected with the internal thread lifting sleeve A, and the external thread of the lifting screw B is connected with the internal thread lifting sleeve B. The right end of the internal thread lifting sleeve A and the left end of the internal thread lifting sleeve B are welded with a lifting integrated frame.

[0007] Preferably, the internal thread lifting sleeve A and the internal thread lifting sleeve B can move up and down respectively on the outside of the lifting screw A and the lifting screw B through the pushing action of the thread, and the output shafts rotate in opposite directions when the two lifting stepping motors work synchronously.

[0008] Preferably, the test protection device also includes an anti-slip baffle and a transparent protective plate, and two of the anti-slip baffles and the transparent protective plate are respectively provided. The two anti-slip baffles are respectively fixed at the bottom ends of the lifting screw A and the lifting screw B, and the two transparent protective plates are respectively connected between the front and rear ends of the two lifting integrated frames, and the two transparent protective plates are respectively located outside the front and rear ends of the pillar A and the pillar B.

[0009] Preferably, a mounting base is welded to the bottom end of the pillar A and the pillar B, and the mounting base is arranged in a horizontal longitudinal manner at the bottom of the pillar A and the pillar B, and the pressure-bearing base and the pressure-bearing top seat are parallel to each other.

[0010] Preferably, a T-shaped positioning slide rail is provided on the outer wall of the top end of the pressure-bearing base, two positioning slide seats are provided on the T-shaped positioning slide rail, and a locking reserved hole is also provided inside the front end of the positioning slide seat, and the two positioning slide seats can slide left and right on the T-shaped positioning slide rail.

[0011] Preferably, a lifting hydraulic machine is provided at the top of the positioning slide, and the lifting hydraulic machine is fixedly connected to the positioning slide via a flange and screws, and a bridge placement seat is provided at the top of the hydraulic shaft of the lifting hydraulic machine.

[0012] Compared with the prior art, the utility model provides a bridge bearing capacity testing device, which has the following beneficial effects:

[0013] The utility model adds a novel test protection device on the two columns of the bridge bearing capacity testing device. The test protection device can be raised and lowered by the lifting stepper motor transmission on the two columns. After the bridge component is placed on the bridge placement seat at the top of the two lifting hydraulics, the downward pressure hydraulic press is required to apply pressure to the bridge component from top to bottom through the downward pressure seat. The bridge bearing capacity is tested by the size of the applied pressure and the deformation of the bridge component. However, when the bridge component is subjected to strong pressure, local cracking may easily occur, and splashes generated by the cracking may splash outward. Before the test, it is only necessary to lower the test protection device to the outside of the test area. The test protection device can block the splashes generated during the bearing capacity test, thereby preventing the splashes generated during the test from hitting the test personnel, thereby protecting the personal safety of the test personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a three-dimensional structural schematic diagram of a bridge bearing capacity testing device.

[0015] Figure 2 The utility model is a schematic diagram of the planar structure of a bridge bearing capacity testing device.

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the test protection device of the utility model.

[0017] In the figure: 1. Place the base frame; 2. Pillar A; 3. Adjustment slide; 4. Bridge placement seat; 5. Pressure base; 6. T-type adjustment slide rail; 7. Lifting hydraulic machine; 8. Pillar B; 9. Pressing seat; 10. Pressing hydraulic machine; 11. Test protection device; 12. Pressure top seat; 13. Anti-slip baffle; 14. Lifting screw A; 15. Lifting integrated frame; 16. Internal thread lifting sleeve A; 17. Lifting stepping motor; 18. Transparent protective plate; 19. Internal thread lifting sleeve B; 20. Lifting screw B. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The utility model provides Figure 1-3A bridge bearing capacity testing device shown in the figure comprises a pillar A2 and a pressure-bearing base 5 arranged at the right end of the bottom of the pillar A2, a pillar B8 is arranged at the right end of the pressure-bearing base 5, the pillars A2 and B8 are parallel to each other, a pressure-bearing top seat 12 is connected between the top ends of the pillars A2 and B8, a downward pressure hydraulic pressure machine 10 is arranged at the center of the bottom end of the pressure-bearing top seat 12, a downward pressure seat 9 is arranged at the bottom end of the hydraulic shaft of the downward pressure hydraulic pressure machine 10, a mounting base 1 is welded to the bottom ends of the pillars A2 and B8, and the mounting base 1 is arranged in a horizontal longitudinal manner at the bottom of the pillars A2 and B8;

[0020] The pressure-bearing base 5 and the pressure-bearing top seat 12 are parallel to each other. A T-shaped positioning slide rail 6 is arranged on the outer wall of the top of the pressure-bearing base 5. Two positioning slide seats 3 are arranged on the T-shaped positioning slide rail 6. A locking reserved hole is also arranged inside the front end of the positioning slide seat 3. Both positioning slide seats 3 can slide left and right on the T-shaped positioning slide rail 6. A lifting hydraulic device 7 is arranged on the top of the positioning slide seat 3. The lifting hydraulic device 7 is fixedly connected to the positioning slide seat 3 through a flange and screws. A bridge placement seat 4 is arranged on the top of the hydraulic shaft of the lifting hydraulic device 7. When testing the bearing capacity of a bridge, firstly, the bearing capacity of the bridge needs to be placed by placing the base frame 1, and then the pressure supply equipment needs to be connected to the downward pressure hydraulic machine 10 and the two lifting hydraulic machines 7, so that the pressure supply equipment can increase and reduce the pressure of the downward pressure hydraulic machine 10 and the two lifting hydraulic machines 7, and then the bridge, bridge component or bridge replica model needs to be placed horizontally on the two bridge placement seats 4, and then the downward pressure hydraulic machine 10 and the two lifting hydraulic machines 7 are pressurized by the pressure supply equipment;

[0021] The lifting hydraulic machine 7 will push the bridge, bridge component or bridge replica model upward through the bridge placement seat 4, and the pressing hydraulic machine 10 will push the pressing seat 9 downward. After the pressing seat 9 contacts the top of the bridge, bridge component or bridge replica model, it will continue to press down. This will cause the center of the bridge, bridge component or bridge replica model to be pressed down and the two ends to be pushed up, thereby simulating the stress conditions of the bridge when it is bearing load. The bearing capacity of the bridge can be tested by observing the deformation of the bridge, bridge component or bridge replica model after being subjected to stress.

[0022] like Figure 1 and Figure 3As shown, the left end of the pillar A2 and the right end of the pillar B8 are connected with a test protection device 11, the test protection device 11 includes a lifting screw A14, a lifting integrated frame 15, an internal thread lifting sleeve A16, a lifting stepper motor 17, an internal thread lifting sleeve B19 and a lifting screw B20. Two lifting stepper motors 17 are provided, and the two lifting stepper motors 17 are respectively fixed to the outer wall of the left end of the top of the pillar A2 and the outer wall of the right end of the top of the pillar B8. The bottom ends of the output shafts of the two lifting stepper motors 17 are respectively connected to the lifting screw A14 and the lifting screw B20. The lifting screw A14 and the lifting screw Rod B20 is respectively located outside the left end of pillar A2 and outside the right end of pillar B8, the external thread of lifting screw A14 is sleeved with internal thread lifting sleeve A16, the external thread of lifting screw B20 is sleeved with internal thread lifting sleeve B19, the right end of internal thread lifting sleeve A16 and the left end of internal thread lifting sleeve B19 are welded with lifting integrated frame 15, the internal thread lifting sleeve A16 and the internal thread lifting sleeve B19 can move up and down respectively on the outside of lifting screw A14 and lifting screw B20 through thread pushing action, and the output shaft rotates in opposite directions when the two lifting stepping motors 17 work synchronously.

[0023] like Figure 1 and Figure 3 As shown, the test protection device 11 also includes an anti-slipping baffle 13 and a transparent protection plate 18, and two anti-slipping baffles 13 and two transparent protection plates 18 are respectively provided, and the two anti-slipping baffles 13 are respectively fixed to the bottom ends of the lifting screw A14 and the lifting screw B20, and the two transparent protection plates 18 are respectively connected between the front and rear ends of the two lifting integrated frames 15, and the two transparent protection plates 18 are respectively located outside the front and rear ends of the pillar A2 and the pillar B8;

[0024] After the bridge, bridge component or bridge replica model is placed on the two bridge placement seats 4, it is necessary to apply pressure to the bridge, bridge component or bridge replica model from top to bottom through the downward pressure hydraulic press 10. Before this, it is necessary to start the two lifting stepper motors 17. The two lifting stepper motors 17 work synchronously and drive the lifting screw A14 and the lifting screw B20 to rotate in the opposite direction respectively. The lifting screw A14 and the lifting screw B20 synchronously push the internal thread lifting sleeve A16 and the internal thread lifting sleeve B19 downward through the thread pushing action, so that the internal thread lifting sleeve A16 and the internal thread lifting sleeve B19 drive the transparent protective plate 18 between the front and rear ends of the two lifting integrated plate belts to move downward until the two transparent protective plates 18 are respectively protected on the front and rear sides of the test area, and then the bridge bearing capacity test device can be started normally;

[0025] In this way, the bridge, bridge components or bridge replica models will be completely protected by the two transparent protective plates 18 when being tested. If splashes are generated during the load-bearing capacity test, the splashes will be blocked by the transparent protective plates 18 when splashing in the forward and backward directions, thereby preventing the splashes from injuring the testers. The transparent protective plates 18 are made of transparent tempered glass, so the testers can observe the compressive deformation of the bridge, bridge components or bridge replica models through the transparent protective plates 18, which is convenient for the testers to record the test data.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bridge bearing capacity testing device, comprising a pillar A (2) and a pressure-bearing base (5) arranged at the right end of the bottom of the pillar A (2), a pillar B (8) being arranged at the right end of the pressure-bearing base (5), the pillar A (2) and the pillar B (8) being parallel to each other, a pressure-bearing top seat (12) being connected between the top ends of the pillars A (2) and B (8), a downward pressure hydraulic machine (10) being arranged at the center of the bottom end of the pressure-bearing top seat (12), a downward pressure seat (9) being arranged at the bottom end of the hydraulic shaft of the downward pressure hydraulic machine (10), characterized in that: The left end of the support A (2) and the right end of the support B (8) are connected with a test protection device (11); The test protection device (11) comprises a lifting screw rod A (14), a lifting integrated frame (15), an internal thread lifting sleeve A (16), a lifting stepping motor (17), an internal thread lifting sleeve B (19) and a lifting screw rod B (20). Two lifting stepping motors (17) are provided. The two lifting stepping motors (17) are respectively fixed to the outer wall of the left end of the top of the support A (2) and the outer wall of the right end of the top of the support B (8). The bottom ends of the output shafts of the two lifting stepping motors (17) are respectively connected to the lifting stepping motors (17). The screw rod A (14) and the lifting screw rod B (20) are respectively located outside the left end of the support A (2) and outside the right end of the support B (8); the lifting screw rod A (14) is threadedly sleeved with an internal thread lifting sleeve A (16); the lifting screw rod B (20) is threadedly sleeved with an internal thread lifting sleeve B (19); the right end of the internal thread lifting sleeve A (16) and the left end of the internal thread lifting sleeve B (19) are both welded with a lifting integrated frame (15).

2. A bridge bearing capacity testing device according to claim 1, characterized in that: The internal thread lifting sleeve A (16) and the internal thread lifting sleeve B (19) can move up and down respectively on the outside of the lifting screw A (14) and the lifting screw B (20) through the pushing action of the threads, and the rotation directions of the output shafts of the two lifting stepping motors (17) are opposite when they work synchronously.

3. A bridge bearing capacity testing device according to claim 1, characterized in that: The test protection device (11) further comprises an anti-slipping baffle (13) and a transparent protection plate (18), wherein two anti-slipping baffles (13) and two transparent protection plates (18) are respectively provided, and the two anti-slipping baffles (13) are respectively fixed to the bottom ends of the lifting screw A (14) and the lifting screw B (20), and the two transparent protection plates (18) are respectively connected between the front and rear ends of the two lifting integrated frames (15), and the two transparent protection plates (18) are respectively located outside the front and rear ends of the pillar A (2) and the pillar B (8).

4. A bridge bearing capacity testing device according to claim 1, characterized in that: The bottom ends of the pillars A (2) and B (8) are both welded with a mounting base (1), and the mounting base (1) is arranged in a horizontal longitudinal manner at the bottom of the pillars A (2) and B (8), and the pressure-bearing base (5) and the pressure-bearing top seat (12) are parallel to each other.

5. A bridge bearing capacity testing device according to claim 4, characterized in that: The outer wall at the top end of the pressure-bearing base (5) is provided with a T-shaped position adjustment slide rail (6), and two position adjustment slide seats (3) are provided on the T-shaped position adjustment slide rail (6).

6. A bridge bearing capacity testing device according to claim 5, characterized in that: A locking reserved hole is also provided inside the front end of the positioning slide (3), and both positioning slides (3) can slide left and right on the T-shaped positioning slide rail (6).

7. A bridge bearing capacity testing device according to claim 6, characterized in that: A lifting hydraulic device (7) is arranged at the top of the position adjustment slide (3), and the lifting hydraulic device (7) is fixedly connected to the position adjustment slide (3) via a flange and screws.

8. A bridge bearing capacity testing device according to claim 7, characterized in that: A bridge placement seat (4) is provided at the top end of the hydraulic shaft of the jacking hydraulic device (7).

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